Technical data

13773-001

34-40

Page 2 31 July 2001

(2) Installation - Garmin GNS 430 GPS/COM

CAUTION: When mounting the transceiver, do not press on display window as damage may

result.

(a) With light to medium pressure, push transceiver into mounting tray to engage electrical

connectors.

(b) Insert hex wrench into front panel bolt hole and engage hex bolt.

(d) Reset ESSENTIAL and NON-ESSENTIAL AVIONICS circuit breakers.

(3) Inspection/Check VHF COM Check - GNS 430

A flight test is recommended after the installation to ensure satisfactory performance. To check

the communications transceiver, maintain an appropriate altitude and contact a ground station

facility at a range of at least 50 nautical miles. Contact a close ground station. Press the squelch

disable button to defeat the automatic squelch feature and listen for any unusual electrical noise

which would increase the squelch threshold. If possible, verify the communications capability on

both the high and low ends to the VHF COM band.

B. Multifunction Display (MFD) (See Figure 34-401)

(1) Removal - Multifunction Display (MFD)

(a) Ensure BAT 1, BAT 2, and AVIONICS master switches are in off position.

(b) Pull MFD circuit breaker.

CAUTION: When removing MFD, do not strain wire harness by pulling cable too far

from instrument panel.

(d) Pull MFD from instrument panel just sufficiently to expose cable connector.

(e) Rotate cable plug counterclockwise and remove from receptacle.

(f) Remove MFD from airplane.

(2) Installation - Multifunction Display (MFD)

(a) Position MFD close enough to instrument panel cutout to connect cable plug to receptacle

without straining wire harness.

(b) Insert MFD into instrument panel cutout and slide forward until captive screws align with

instrument panel mounting holes.

receptacle. Continue clockwise rotation approximately 1/4 turn until screw is secure.

(d) Reset MFD circuit breaker.